Microphone with telescopic sound pickup means

ABSTRACT

A microphone having a telescopic sound pickup means includes a handle fitted with an adjusting knob provided with an internal spiral slide groove. By turning the adjusting knob, a pin may be brought by the spiral slide groove to slide upwardly and downwardly along a vertical slot formed in one side of the handle. The pickup head is therefore brought to perform telescopic actions by the displacement of the pin.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a microphone, and more particularly toa hand-held microphone with a telescopic sound pickup means.

2. Description of the Prior Art

Conventional hand-held microphones have fixed internal components, andthe pickup effects of the microphone are directly affected by thedistance from the sound source to the head of the microphone. In singingor speaking, when a user holds the microphone at quite a distance fromhis/her mouth or if his/her voice is too low, the pickup effects of themicrophone will be poor. It is therefore necessary for the user to holdthe microphone near to his/her mouth, which may make the user quiteuncomfortable since he/she may not used to holding the microphone nearthe mouth.

SUMMARY OF THE INVENTION

A primary object of the present invention is to provide a microphonewith a sound pickup means capable of telescopic actions, in which anadjusting knob provided on a handle may be turned to cause the soundpickup means to displace upwardly or downwardly to ensure good pickupeffects.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing and other features and advantages of the present inventionwill be more clearly understood from the following detailed descriptionand the accompanying drawings, in which,

FIG. 1 is an exploded view of a preferred embodiment of the microphoneaccording to the present invention;

FIG. 2 is a sectional view of the microphone according to the presentinvention in an assembled state; fragmentary side view of the microphoneof the present invention with the adjusting knob shown in phantom;

FIG. 3A-2 is a top view of the microphone of FIGS. 3A-1;

FIG. 3B-1 is another fragmentary side view of the microphone of thisinvention showing the adjusting knob in phantom;

FIG. 3B-2 is a top view of the microphone of FIG. 3B-1;

FIG. 4 is an outer view of the microphone according to the presentinvention in an assembled state.

FIG. 5 is an exploded view of a microphone of another embodiment of thepresent invention.

FIG. 6 is a sectional view of the microphone shown in FIG. 5.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

With reference to FIGS. 1 and 4, a preferred embodiment of the presentinvention basically comprises a hollow handle 11, a sound pickup means 2fitted into the hollow of the handle 11, an adjusting knob 3 fitted ontothe handle 11 for adjusting the height of the sound pickup means 2inside the handle 11, a ring 12 locked onto the handle 11 for limitingthe movement of the adjusting knob 3, and a cap 13 located above thering 12.

FIG. 2 illustrates the inter-relationship among the above-mentionedcomponents of the microphone structure according to the presentinvention. The handle 11 has a stair-shaped shaft 111 at an upperportion thereof for receiving the adjusting knob 3 which turns thereon.The shaft 111 is provided with a vertical slot 112 in one side thereofand a slide seat 113 at a top end thereof for receiving a hollow movablesleeve 21 of the sound pickup means 2 and for slidable movement thereon.The slide seat 113 has external threads 114 for securing the ring 12 andthe cap 13.

The sound pickup means 2 consists of a head 22 which is fitted into themovable sleeve 21 by means of a soft pad 221 at the bottom side thereof.The movable sleeve 21 is provided with a flange 211 at its apical endand a screw hole 212 near the bottom end thereof. When the movablesleeve 21 of the sound pickup means 2 is slipped into the slide seat, apin 23 may be used to pass through the slot 112 to be locked within thescrew hole 212 so that the sound pickup means 2 may be secured on thehandle 11 and may slidably displace upwardly and downwardly inside theslide seat 113.

The adjusting knob 3 is an annular structure with vertical corrugationson its outer circumferential surface. The inner wall of the adjustingknob 3 is configured to have a spiral slide groove 31 along which thepin 23 may slide to enable the adjusting knob 3 to be screwably fittedonto the shaft 111. The ring 12 has an inner projecting ring which isprovided with internal threads 121. By means of the internal threads 121which engage with the external threads 114 of the handle 11, the ring 12is capable of restraining the displacement of the adjusting knob 3 dueto the counter-action of the pin 23. The cap 13 is a polygonal hollowstructure with a spherical mesh top. Internal threads 131 are providedat a bottom portion of the cap 13 for engaging the external threads 113of the handle 11 and thereby coupling with the ring 12. The cap 13 isprovided to protect the internal structure of the microphone of thepresent invention.

FIGS. 3A-1 through 3B-2 illustrate the telescopic actions of the soundpickup means 2 of the microphone according to the present invention. Asshown in FIG. 3A-1, when the user turns the adjusting knob 3 in aclockwise direction, the pin 23 disposed in the slot 112 will be pushedupwardly along the spiral groove 31 of the adjusting knob 3, so that thesound pickup means 2 projects in the direction of the upper portion ofthe handle 11. As shown in FIG. 3B-1, when the user turns the adjustingknob 3 in a counter-clockwise direction, the pin 23 disposed in the slot112 will be pushed downwardly along the spiral groove 31 of theadjusting knob 3 so that the sound pickup means 2 retracts in thedirection of the lower portion of the handle 11.

FIG. 5 shows another preferred embodiment of the microphone withtelescopic sound pickup means which comprises a spiral block 61 with aspiral upper surface 611 which rises from a lower position to a higherposition to create a difference in height in the upper surface, so thatthe sound pickup means 5 may slidably displace upwardly and downwardlyalong the spiral upper surface 611. With further reference to FIG. 6, ahandle 4 has an interior provided with a first hollow 44 and a secondhollow 45 of different diameters. A bottom side of the first hollow 44forms a substantially planar support 42 for receiving the spiral block61 which may turn clockwisely or counter-clockwisely thereon. The firsthollow 44 is further provided with two slide rails 441 disposed onopposite sides thereof at suitable positions for receiving two lugs 514formed on the outer periphery of a bottom portion of a movable sleeve51. The movable sleeve 51 is hence located above the spiral block 61 inthe first hollow 44 such that a steel ball 512 on a rod 511 at a bottomside of the movable sleeve 51 is in contact with the spiral uppersurface 611. When the spiral block 61 is turned, the movable sleeve 51is therefore caused to slidably displace upwardly and downwardly. Themovable sleeve 51 is further provided with a projecting ring 513 on anouter surface at a middle section thereof. A spring 72 is fitted abovethe projecting ring 513 on the outer surface of the movable sleeve 51.Besides, a ring 71 is fitted around the spring 72 for restricting thespring 72 on an inner wall of the second hollow 45 so that the spring 72may exert pressure on the movable sleeve 51 which may keep contact withthe spiral upper surface 611 to a certain extent for ensuring thedownward displacement of the movable sleeve 51 along the spiral suppersurface 611. Furthermore, a central hole 9 is formed in the movablesleeve 51, the spiral block 61 and the handle 4 respectively throughwhich an electrical wire of a sound pickup head 52 of the movable sleeve51 may pass. The first hollow 44 of the handle 4 is additionallyprovided with a horizontal slot 41 at a suitable position in a bottomportion thereof such that a trigger lever 62 may pass through the slot41 to be locked onto one side of the spiral block 61. When the triggerlever 61 is turned to displace horizontally within the slot 41, thespiral block 61 may be caused to displace clockwisely orcounter-clockwisely, pushing the movable sleeve 51 thereabove toslidably displace upwardly and downwardly on the spiral upper surface611, achieving the telescopic effect of the sound pickup means 5.

Although the present invention has been illustrated and described withreference to the preferred embodiment thereof, it should be understoodthat it is in no way limited to the details of such embodiment but iscapable of numerous modifications within the scope of the appendedclaims.

What is claimed is:
 1. A microphone with telescopic sound pickup means,said microphone comprising:a hollow handle having a stair-shaped shaftat an upper portion thereof, said shaft having a vertical slot in oneside thereof, said handle further having a vertical slide seat withexternal threads at an apical end thereof; a pickup means consisting ofa pickup head which is disposed within a hollow movable sleeve by meansof a soft pad provided at a bottom side thereof, said movable sleevehaving a flange at an apical end thereof and a screw hole near a bottomend thereof, a pin being provided to pass through said slot in saidhandle to be locked in said screw hole so that said movable sleeve maybe fitted into said slide seat of said handle and may displace upwardlyand downwardly therein; an adjusting knob being an annular ring providedwith external vertical corrugations and having a spiral slide grooveprovided at an inner wall thereof, said pin being capable of slidingalong said groove to enable said adjusting knob to be screwably fittedonto said shaft of said handle; and a ring having an inner projectingring provided with internal threads, whereby said ring may be lockedonto the external threads of said slide seat to restrict displacement ofsaid adjusting knob by means of counteractions of said pin.
 2. Amicrophone with telescopic sound pickup means comprising:a handle, and aspiral block having a spiral upper surface, a movable sleeve forsupporting a sound pickup head of the sound pickup means, a spring forresetting said movable sleeve, and a ring for restraining said springfitted respectively into an interior of said handle, said handle havinga horizontal slot formed in one side thereof with a trigger leverpassing through said slot to be locked onto said spiral block, saidmovable sleeve having a rod projecting from a bottom side thereof forcontacting said spiral upper surface of said spiral block, wherein whensaid trigger lever is turned to reciprocate within said slot in saidhandle, said spiral block is caused to displace clockwisely orcounter-clockwisely, which in turn causes said movable sleeve toslidably displace upwardly and downwardly along said spiral uppersurface to enable said sound pickup means to perform telescopic actions.